We have been ordering a lot due to Covid but all within the US. Everything has arrived on time. Maybe we're just lucky. But I've heard that international stuff from China is taking an additional 2-4 weeks from the usual 4-6 weeks, which is a very long time! Note that if the warehouse is slow, it's not just a matter of "hiring more people". They could be having staff shortages due to the virus, like (for example) 50% occupancy in a building due to mandated government rules. Or their employees are actually sick because they are in hot zone. Many reasons and permutations in these trying times.